3781885613 has 12 divisors (see below), whose sum is σ = 4159942080. Its totient is φ = 3435602280.

The previous prime is 3781885573. The next prime is 3781885631. The reversal of 3781885613 is 3165881873.

It is not a de Polignac number, because 3781885613 - 2²⁴ = 3765108397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781885643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169418 + ... + 190436.

It is an arithmetic number, because the mean of its divisors is an integer number (346661840).

Almost surely, 2^3781885613 is an apocalyptic number.

It is an amenable number.

3781885613 is a deficient number, since it is larger than the sum of its proper divisors (378056467).

3781885613 is a wasteful number, since it uses less digits than its factorization.

3781885613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22528 (or 22517 counting only the distinct ones).

The product of its digits is 967680, while the sum is 50.

The square root of 3781885613 is about 61497.0374327089. The cubic root of 3781885613 is about 1558.0072095707.

The spelling of 3781885613 in words is "three billion, seven hundred eighty-one million, eight hundred eighty-five thousand, six hundred thirteen".